Prolific
Prolific operates a platform for sourcing human data, used by over 35,000 AI developers and researchers. A new study launches on its platform every 2 minutes, and it has been recognized as one of the fastest-growing companies by the Financial Times and Deloitte.
About
Prolific provides a platform where researchers and AI developers can gather data from engaged participants. Its customers include organizations needing human data for AI training and research purposes.
The company has raised $34M in funding, most recently in a Series A round in July 2023. It has been named among the fastest-growing businesses by the Financial Times and Deloitte, indicating rapid expansion in its market.
Founders and leadership
Prolific's largest function is Research, with 108 employees dedicated to this area. The company has a median tenure of 2 years, suggesting a relatively stable workforce.
The Prolific org chart
Phelim Bradley (CEO) leads 59 mapped leaders with 4 direct reports. Click +N to expand a team; names link to the person’s public profile.
Talent flow
Employees often come from companies like Outlier, cinch, and Mercor. After leaving Prolific, they frequently move to roles at n8n, Handshake, and Ashby.
Most common previous employers of Prolific staff: Outlier (18), cinch (9), Mercor (9), Welo Data (8), Scale AI (8), Appen (7). Former Prolific employees most often moved to n8n (4), Handshake (3), Ashby (3), Spotted Zebra (2), Kraken (2), Cohere (2).
Alumni worth knowing
The Prolific mafia
Prolific alumni have founded 14 companies, including The Generalist, Tulo, and AuumAI. These startups collectively employ a significant number of former Prolific staff.
14Josh Tulloch (JT), was Growth & Community Manager (YC S19) until 2022Andrew Arderne, was Software Engineer until 2022Danny Martinez, was Head of Growth until 2022Oliver Bowman, was Engineering Manager until 2024Thom Cummings, was VP of Marketing until 2026
kumy veluppillai, was Growth Marketing Lead - AI Research Labs until 2025
Keshav Laad, was Product Marketing Manager until 2026
Kirsten M., was Senior Product Marketer until 2024
Dunja L., was Fractional CMO until 2021
Michael Curry, was Senior Software Engineer until 2022
Sophie Palmer, was Product Consultant until 2025Hiring now
Web traffic
Traffic mix: 71% direct, 9% search, 9% social, 0% paid.
Where the team actually sits
Prolific people are concentrated in England, United Kingdom (104), United Kingdom (39), New York, United States (13), London Area, United Kingdom (12). 2 offices on record.
Search footprint
Prolific attracts about 40,750 organic search visits a month, traffic worth roughly $39K a month if bought through ads. It gained 1,772 ranking keywords and lost 1,137 in the last period.
What employees say
- Compensation
- 3.60 / 5
- Career opportunities
- 3.30 / 5
- Senior management
- 3.50 / 5
- Work-life balance
- 4.10 / 5
Frequently asked
Prolific has raised $34M in total, most recently a Series A round in July 2023.
Phelim Bradley (CEO) sits at the top of Prolific's reporting structure, with 4 direct reports.
The most common previous employers of current Prolific staff are Outlier (18 people), cinch (9 people), Mercor (9 people).
Former Prolific employees most often move to n8n (4), Handshake (3), Ashby (3).
At least 14 companies have a founder who previously worked at Prolific, including The Generalist, Tulo, AuumAI.
Prolific attracts about 40,750 organic search visits a month, worth roughly $39K a month in equivalent ad spend.
Prolific staff are concentrated in England, United Kingdom (104), United Kingdom (39), New York, United States (13).
Computed from 409 current and 269 former Prolific profiles, as of September 2026. Source: Crustdata.
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